[metal] Remove support of double type (#7118)

According to latest Metal spec (v2.3), `double` is still not supported.
apache · Dec 16, 2020 · 053347c · 053347c
1 parent 18cf9b9
commit 053347c
Showing 1 changed file with 0 additions and 3 deletions.
diff --git a/src/target/source/codegen_metal.cc b/src/target/source/codegen_metal.cc
@@ -180,9 +180,6 @@ void CodeGenMetal::PrintType(DataType t, std::ostream& os) {  // NOLINT(*)
       case 32:
         os << "float";
         break;
-      case 64:
-        os << "double";
-        break;
       default:
         fail = true;
         break;